The property (of an argument) of not only being valid, but also of having true premises.
The result or product of being sound.
The property of a logical theory that whenever a wff is a theorem then it must also be valid. Symbolically, letting T represent a theory within logic L, this can be represented as the property that whenever T⊢𝜙 is true, then T vDash 𝜙 must also be true, for any wff φ of logic L.
The state or quality of being sound.
Substantiality; solidity; firmness.
Physical matter; material.
Material possessions; estate; property; resources.
Hypostasis.
Drugs (illegal narcotics)
The essential part of anything; the most vital part.
A form of matter that has constant chemical composition and characteristic properties.
To give substance to; to make real or substantial.